Appeared in the January 1799 issue of The Lady’s Monthly Museum.
The aigrette, along with a sable fur, was sent to Lord Nelson as a gift after the victory off the Mouth of the Nile (Charnock, 1806).
Charnock, J (1806). Biographical Memoirs of Lord Viscount Nelson. Ethridge and Bliss.
There is a lovely article on the aigrette here: https://www.telegraph.co.uk/luxury/jewellery/nelsons-chelengk-rediscovered/